High Flow Gas Regulator with Internal Relief The Relieving Regulator has an internal relief valve that provides protection against over pressurization. As output pressure builds up above the start-to-discharge point the relief seat disengages from the diaphragm and the excess pressure is relieved through the bonnet vent port. As a result, the output pressure reduces and returns to the initial setpoint. The relief seat then reseats against the diaphragm. The action of the internal relief valve in many cases eliminates the need for an external relief valve. The is available in spring ranges from 5-0 up to 70-50. The contains a relief indicator that is attached to the vent assembly. The indicator pops off the vent when the relief valve opens and serves as a visual indicator that the relief valve has operated. Applications Farm Tap Gas Gathering City Gates District Gates Maximum Bonnet and Diaphragm Casing Maximum pressure to spring and diaphragm casing to prevent leak to atmosphere (internal parts damage may occur). Maximum pressure to spring and diaphragm casings to prevent burst of casings during abnormal operation (leak to atmosphere and internal parts may occur). Maximum diaphragm casing overpressure to prevent damage to internal parts. Materials of Construction Body, Bonnet, Diaphragm Case Steel Body, Bonnet & Diaphragm Case Cast Ductile Iron Body / Aluminum Bonnet & Diaphragm Case Steel Body / Aluminum Bonnet Options & Diaphragm Case (NACE only) Steel Casing / LCC Body Aluminum Casing / LCC Body CF8M Stainless Steel Body, Bonnet & Diaphragm Case Diaphragm Option Nitrile (low pressure) Seat Nitrile Options Nylon Fluorocarbon Orifice Aluminum Options Stainless Steel (NACE only) & Diaphragm Casing Style Die Cast Aluminum M BAR BAR 50 7. 50 50 Steel / SS 50 7. 50 7. Die Cast Aluminum 375 5.9 375 375 Steel / SS 00 8.7 00 8.7 All 0 8.3 0 8.3 Specifications Maximum Body 000 Steel Nylon Seat 000 Ductile Iron 485 Flanged Steel Nitrile Seat 000 All Units Fluorocarbon Seat 300 All Units 5 50 3/4 NPT Body Sizes NPT NPT 3 3" 8" Orifice Sizes 3 6" 4" 3 8" " Flow * 5 0 300 43,000 5 40,000 7,000 Output 35 80,00 4,000 0 95,000 50,000 70 50,500 7,000 * (SCFH of 0.6 S.G. Natural Gas) Temperature 0 to 80 F ( 9 to 8 C) Weight Approximate " 5.3 lbs.39 kg " 8.8 lbs 3.96 kg belgas.net
Regulator Rebuild Kits Kit Includes Part Number Kit Includes Part Number Nitrile Nitrile diaphragms (), Nitrile valve disk, O-rings, back-up rings, and retaining pin 97-R6-700 Nitrile NACE Nitrile diaphragms (), SS Nitrile valve disk, O-rings, back-up rings, and retaining pin 97-R6-7N0 Nylon Nitrile diaphragms (), Nylon valve disk, O-rings, back-up rings, and retaining pin. 97-R6-70 Nylon NACE Nitrile diaphragms (), SS Nylon valve disk, O-rings, back-up rings, and retaining pin 97-R6-7N Part Matrix Port Size 06 3 4" 08 " 6 " BAR 00 5-0 0.34 -.4 040 5-40 -.8 080 35-80.4-5.5 095 0-95 0.7-6.6 50 70-50 4.8-0.3 Special Adders 0 None Monitor A 50 #RF * B 300 #RF * C 600 #RF * D Socket Weld * E 900 #RTJ * W 50 #RF & Monitor * X 300 #RF & Monitor * Y 600 #RF & Monitor * Z Socket Weld & Monitor * Versions 0 Standard N NACE F NACE & Fluorocarbon T Stainless Trim Orifice 0 3 3" 8" 3 3 6" 4 4" 6 3 8" 8 " Seat Material 0 Nitrile Nylon Fluorocarbon Case / Body 0 Aluminum / Iron Steel / Steel Aluminum / Steel 6 Aluminum / LCC Steel 7 Steel / LCC Steel 8 Steel / Iron 9 Stainless / Stainless NOTE: Nitrile or FKM is required for 5-0, 5-40 and 0-95. Nylon is recommended only up to /8" orifice for these pressure ranges. * Steel, LCC Steel or Stainless Steel Bodies Only NOTE: Nitrile or FKM is required for 5-0, 5-40 and 0-95. Nylon is recommended only up to /8" orifice for these pressure ranges. belgas.net
Relief Performance - /4" Orifice 70.0 RELIEF PERFORMANCE - P/N 080000400 /4" ORIFICE 5-0, Preset @ Po=0, Seat Disk Removed, Vent Screen Removed 60.0 50.0 OUTLET PRESSURE () 40.0 30.0 0.0 0.0 0.0 0.0 0.0 0.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 00.0 0.0 0.0 30.0 40.0 INLET PRESSURE () Internal Relief Performance 5 to 0 3 (.03 to.4 Maximum Allowable Downstream Maximum to Keep Maximum Allowable Downstream from Being Exceeded Port Diameter, inches BAR BAR 3/3 /8 3/6 /4 3/8 / 0 0.7 5.0 0.4 60 4. 50 740 30 90 95 75 00 6.9 000 500 60 390 80 30 5 8.6 000 900 830 480 0 60 75. 000 000 00 670 30 0 00 3.8 000 000 300 770 360 60 50 7. 000 000 600 960 450 30 60 4. 000 60 60 70 90 70 00 6.9 000 400 60 370 70 30 5 8.6 000 900 80 480 0 60 75. 000 000 00 670 30 0 00 3.8 000 000 300 770 360 60 50 7. 000 000 600 960 450 30 60 4. 850 490 0 30 80 65 00 6.9 000 300 600 360 70 0 5 8.6 000 800 800 480 0 60 75. 000 000 00 670 30 0 00 3.8 000 000 300 770 360 60 50 7. 000 000 600 960 450 30 5 to 40 (.0 to.8 Maximum to Keep Maximum Maximum Allowable Downstream Allowable from Being Exceeded Downstream Port Diameter, inches BAR BAR 3/3 /8 3/6 /4 3/8 / 60 4. 000 380 0 30 80 65 00 6.9 000 300 590 350 70 0 5.0 5 8.6 000 800 800 470 0 60 75. 000 000 00 640 30 0 00 3.8 000 000 300 780 370 60 50 7. 000 000 600 960 450 30 60 4. 630 00 50 00 70 65 00 6.9 000 00 550 330 60 0 0.4 5 8.6 000 700 760 450 0 60 75. 000 000 00 630 30 0 00 3.8 000 000 300 770 360 60 50 7. 000 000 600 960 450 30 00 6.9 000 950 450 60 40 0 5 8.6 000 500 670 400 90 50 30. 75. 000 000 000 60 300 0 00 3.8 000 000 00 760 360 60 50 7. 000 000 600 970 450 30 00 6.9 500 700 330 00 0 08 5 8.6 000 300 560 340 80 40 40.8 75. 000 800 000 550 90 0 00 3.8 000 000 00 730 350 50 50 7. 000 000 600 970 460 30. The internal relief performance values are obtained by removing the disk assembly.. For inlet pressure in excess of 000 (69.0 refer to the maximum body and disk pressure ratings in the specifications section. 3. For pressure settings under 0 (0.69 inlet pressure should be limited to approximately 00 (6.90 so the set point adjustment can be obtained. 4. - Shaded areas indicate maximum inlet pressures allowed during system failure only. belgas.net 3
Internal Relief Performance Capacities for 3/4-inch Body Size 70 to 50 (4.8 to 0.3 Maximum Allowable Downstream Maximum to Keep Maximum Allowable Downstream from Being Exceeded Port Diameter, inches BAR BAR 3/3 /8 3/6 /4 3/8 / 40.8 50 3.4 60 4. 70 4.8 80 5.5 70 4.8 80 5.5 00 6.9 5 8.6 000 00 500 300 70 40 50 0.3 000 600 750 440 30 80 75. 000 000 980 580 90 0 00 3.8 000 000 00 70 340 50 50 7. 000 000 600 940 450 30 5 8.6 400 80 400 30 50 40 50 0.3 000 400 650 370 0 70 75. 000 900 700 530 70 0 00 3.8 000 000 00 670 330 40 50 7. 000 000 500 90 430 30 5 8.6 900 450 70 90 40 30 50 0.3 700 00 540 300 90 60 75. 000 700 780 470 50 00 00 3.8 000 000 000 60 30 30 50 7. 000 000 400 880 40 30 50 0.3 00 850 430 50 70 60 75. 000 400 670 400 30 90 00 3.8 000 000 90 550 80 30 50 7. 000 000 300 830 400 30 50 0.3 800 500 300 00 60 50 75. 500 00 550 330 0 90 00 3.8 000 700 800 480 70 0 50 7. 000 000 00 770 390 300 75. 900 600 400 60 00 75 00 3.8 000 00 630 380 50 0 50 7. 000 000 00 680 360 90 75. 400 50 40 00 90 75 00 3.8 000 960 50 330 40 0 50 7. 000 000 000 60 350 80 00 3.8 500 50 40 30 0 0 50 7. 000 600 770 50 30 70 5 8.6 50 7. 000 000 500 390 90 60 50 0.3 50 7. 00 60 60 60 60 60. The internal relief performance values are obtained by removing the disk assembly.. For inlet pressure in excess of 000 (69.0 refer to the maximum body and disk pressure ratings in the specifications section. 3. For pressure settings under 0 (0.69 inlet pressure should be limited to approximately 00 (6.90 so the set point adjustment can be obtained. 4. - Shaded areas indicate maximum inlet pressures allowed during system failure only. 5 to 0 (.03 to.4 5 to 40 (.0 to.8 Gravity Natural Gas 3/4" Body Size BAR BAR 3/3 /8 3/6 /4 3/8 / 0 0.7 70 30 70 050 500 850 5.0 40 330 80 90 00 850 0.4 90 460 090 750 750 3850 5 0.3 30. 380 60 470 490 3600 4800 60 4. 640 70 460 3690 570 60 75 5. 770 40 880 450 5760 6900 00 6.9 990 690 3540 4790 600 7600 5.0 0 30 800 90 00 80 0.4 80 450 070 740 700 3800 30. 380 60 470 430 3550 4780 60 4. 640 70 460 3690 570 60 75 5. 770 40 880 450 5760 6900 00 6.9 990 690 3540 4790 600 7600 50 0.3 40 430 4000 5680 650 7630 0 0.7 00 3.8 850 3070 400 600 6380 7680 300 0.7 700 3970 470 650 6500 500 34.5 400 440 5640 650 750 5.7 4400 50 6400 000 69.0 4450 60 50 86. 4540 500 03 4880 750 530 000 38 5900 30. 350 590 390 480 4350 4970 50 3.5 550 980 40 4000 7450 8000 60 4. 640 70 60 4680 7800 8900 00 6.9 990 800 3980 6700 9750 0400 50 0.3 40 580 5600 8790 0000 0800 00 3.8 850 3370 7050 9000 000 0800 0.4 300 0.7 700 490 7300 9500 0500 500 34.5 4400 500 7400 9760 750 5.7 6600 5360 8870 000 69.0 7300 6500 50 86. 7500 500 30 7800 750 8400 40.8 60 4. 000 38 8600 60 4. 60 090 70 430 800 900 75 5. 760 370 3080 5330 0300 600 00 6.9 990 790 4070 6840 900 3400 50 0.3 40 580 5850 930 3500 3800 00 3.8 850 3370 7630 000 6300 700 300 0.7 700 490 00 4700 7800 500 34.5 4400 8090 4500 4800 750 5.7 6600 0800 4800 4900 000 69.0 8700 300 6300 50 86. 000 3800 500 30 000 4000 750 3000 000 38 4000 75 5. 700 30 760 4700 870 600 00 6.9 970 740 390 6690 900 4400 50 0.3 40 580 5850 9740 5700 8700 00 3.8 850 3370 7630 400 8400 00 300 0.7 700 490 00 7700 000 500 34.5 4400 8090 8300 0000 750 5.7 6600 000 8900 400 000 69.0 8700 6000 9000 50 86. 000 8700 500 30 3000 9000 750 5000 0000 000 38 7000 Table Continued. Capacity is based on 0% droop unless otherwise noted below.. For pressure setting under 0 (06.9 inlet pressure should be limited to approximately 00 (6.90 so that setpoint adjustment can be obtained. 3. - Blank areas indicate where maximum operating inlet pressure for a given orifice 4 belgas.net
Capacities for 3/4-inch Body Size Capacities for and Inch Body Sizes 70 to 50 (4.8 to 0.3 Gravity Natural Gas 3/4" Body Size BAR BAR 3/3 /8 3/6 /4 3/8 / 00 6.90 900 630 3570 6490 000 700 50 0.3 40 580 5780 0500 8900 5000 00 3.8 850 3370 7630 3700 3000 9000 300 0.7 700 490 00 000 6000 500 34.5 4400 8090 8300 9000 80 5.5 750 5.7 6600 000 300 30900 000 69.0 8700 6000 7400 50 86. 000 9000 500 30 3000 000 750 5000 5000 000 38 7000 00 6.9 5 8.6 50 0.3 50 0.3 70 50 5540 830 5500 0300 00 3.8 850 3370 7630 000 000 5700 300 0.7 700 490 00 800 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 30 3000 750 5000 000 38 7000 50 0.3 50 330 5090 930 5700 0800 00 3.8 830 330 7360 360 400 8600 300 0.7 700 490 00 9700 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 30 3000 750 5000 000 38 7000 00 3.8 760 300 700 500 400 30600 300 0.7 700 490 00 700 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 30 3000 750 5000 000 38 7000. Capacity is based on 0% droop unless otherwise noted below.. For pressure setting under 0 (06.9 inlet pressure should be limited to approximately 00 (6.90 so that setpoint adjustment can be obtained. 3. - Blank areas indicate where maximum operating inlet pressure for a given orifice 5 to 0 (.03 to.4 5 to 40 (.0 to.8 Gravity Natural Gas & " Body Size BAR BAR 3/3 /8 3/6 /4 3/8 / 0 0.7 70 330 70 080 000 50 5.0 40 390 890 500 350 3000 0.4 90 500 60 900 750 3900 5 0.3 30.0 380 690 500 500 3600 4900 60 4. 640 70 460 3690 5650 6900 75 5. 770 40 880 450 6450 7490 00 6.9 990 800 3540 5790 750 850 5.0 0 390 840 480 300 930 0.4 80 500 00 880 700 3830 30.0 380 690 500 460 3550 4840 60 4. 640 70 460 3690 5650 6900 75 5. 770 40 880 450 6450 7490 00 6.9 990 800 3540 4790 750 850 50 0.3 40 580 4660 5680 9980 0800 00 3.8 850 3370 560 6360 000 900 0 0.7 300 0.7 700 4880 6890 7780 3600 500 34.5 4400 670 8570 600 750 5.7 5400 8850 9000 000 69.0 5800 9500 50 86. 6300 500 03 6600 750 6800 000 38 7600 30.07 350 600 390 580 4350 690 50 3.45 550 000 50 4090 7600 8000 60 4.4 640 70 630 4750 7800 0600 00 6.90 990 800 4070 730 0800 3400 50 0.3 40 580 570 0300 3500 4000 00 3.8 850 3370 7050 0500 4000 4000 300 0.7 700 490 950 0800 4900 0.4 500 34.5 4400 7830 800 3000 750 5.7 6600 9000 000 000 69.0 8700 9660 50 86. 0000 500 03 0400 750 000 000 38 4000 60 4. 60 090 430 450 900 9400 75 5. 760 370 3080 5640 0800 6300 00 6.9 990 790 4070 730 3500 7600 50 0.3 40 580 5850 0500 8000 00 00 3.8 850 3370 7630 000 400 4600 300 0.7 700 490 00 4900 4400 40.8 500 34.5 4400 8090 6300 800 750 5.7 6600 000 000 3600 000 69.0 8700 6000 300 50 86. 000 9000 500 03 3000 000 750 5000 000 38 7000 75 5. 700 30 760 4860 8600 800 00 6.9 970 740 390 7000 500 6700 50 0.3 40 580 5850 0500 6800 300 00 3.8 850 3370 7630 3700 0900 7700 300 0.7 700 490 00 000 800 500 34.5 4400 8090 8300 8500 60 4. 750 5.7 6600 000 800 9500 000 69.0 8700 6000 6800 50 86. 000 9000 500 03 3000 000 750 5000 5000 000 38 7000 Table Continued. Capacity is based on 0% droop unless otherwise noted below.. For pressure setting under 0 (06.9 inlet pressure should be limited to approximately 00 PSIF (6.90 so that setpoint adjustment can be obtained. 3. - Blank areas indicate where maximum operating inlet pressure for a given orifice belgas.net 5
Capacities for and Inch Body Sizes 70 to 50 (4.8 to 0.3 Gravity Natural Gas & " Body Size BAR BAR 3/3 /8 3/6 /4 3/8 / 00 6.9 900 630 3570 6650 000 7400 50 0.3 40 580 5750 0500 000 6000 00 3.8 850 3370 7630 3700 500 3800 300 0.7 700 490 00 000 3600 500 34.5 4400 8090 8300 30300 80 5.5 750 5.7 6600 000 700 37400 000 69.0 8700 6000 33300 50 86. 000 9000 500 03 3000 000 750 5000 5000 000 38 7000 00 6.9 5 8.6 50 0.3 50 0.3 70 50 5540 830 5500 0300 00 3.8 850 3370 7630 000 000 6700 300 0.7 700 490 00 800 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 03 3000 750 5000 000 38 7000 50 0.3 50 330 5090 9470 5700 0800 00 3.8 830 330 7360 3400 3600 3300 300 0.7 700 490 00 9700 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 03 3000 750 5000 000 38 7000 00 3.8 760 300 700 900 400 33300 300 0.7 700 490 00 700 500 34.5 4400 8090 8300 750 5.7 6600 000 000 69.0 8700 6000 50 86. 000 500 03 3000 750 5000 000 38 7000. Capacity is based on 0% droop unless otherwise noted below. - Blank areas indicate where maximum operating inlet pressure for a given orifice Parts 3 46 6 7 4 5 9 9 4 7 37 6 30 39 9 8 3 4 44 43 8 6 7 8 0 5 4 3 8 3 4 38 33 34 0 37 44 45 43 3 35 36 6 belgas.net
Parts Item Description Qty. Part Number Cover Adj. Screw, Plastic 60-053-000 Adjustment Screw 648-50-000 3 Locknut. 634-54-000 Bonnet, - Aluminum 604-0-000 4 Bonnet, M - Steel 604--000 Bonnet, - Stainless 604-66-000 5 Vent Screw Assembly 836-005-000 6 Guide, Upper 66-079-000 5-0 Yellow 655-66-000 5-40 Green 655-66-00 7 35-80 & 0-95 Blue 655-66-00 70-50 Red 655-66-003 40-50 Blue 655-66-00 40-500 Red 655-66-003 8 Guide, Lower ( or M only) 66-0-000 Al Case Screws - 648-466-000 9 Stl Case Screws - or M 8 648-467-003 SS Case Screws - or M 648-550-000 0 Diaphragm Piston ( or M only) 637-3-000 Diaphragm & M Aluminum / Iron Case 68-079-000 Diaphragm & M Steel Case 68-080-000 Diaphragm & M Al / Iron (Fluoro) 68-080-00 Diaphragm & M Steel (Fluoro) 68-079-00 Diaphragm Retainer 648-5-000 3 Post, Pusher & M Assy 87-0-000 Diaphragm Case - Aluminum 69-0-000 Diaphragm Case - Steel 69-03-000 4 Diaphragm Case M - Steel 69-04-000 Diaphragm Case, Aluminum (for Steel Body) 69-5-000 Diaphragm Case - Stainless 69-4-000 Diaphragm Case M - Stainless 69-43-000 5 Lever 703-004-000 Lever, NACE 703-005-000 6 Lever Screw 648-466-00 Lever Screw, NACE 648-474-000 7 Pin, Lever 635-053-000 Pin, Lever, NACE 635-057-000 8 Lever Retainer 643-9-000 Lever Retainer, NACE 643-94-000 9 Stem O-ring, Nitrile 649-000-003 Stem O-ring, Fluorocarbon 649-000-343 0 Stem Backup Ring, TFE 644-047-000 Pin, Groove 635-054-000 Pin, Groove NACE 635-058-000 Stem Guide 66-083-000 3 Pin Clip 635-055-000 Pin Clip NACE 635-056-000 4 Stem, 36SS 689-005-000 5 Diaphragm Case O-ring, Nitrile 649-80-000 ( & H) Diaphragm Case O-ring, Fluorocarbon 649-80-00 ( & H) 6 Boost Body 686-004-000 7 Stabilizer, Nitrile 649-78-000 Stabilizer, Fluorocarbon 649-78-00 Item Description Qty. Part Number Seat assembly - Aluminum holder/nitrile disk 8-09-000 Seat assembly - Aluminum/nylon 8-09-00 8 Seat assembly - Aluminum/Fluorocarbon 8-040-000 Seat assembly - 36SS Holder/Nitrile 8-00-000 Seat assembly - 36SS/Nylon 8-00-00 Seat assembly - 36SS/Fluorocarbon 8-040-00 Orifice - Aluminum - 3 3" 688-03-005 Orifice - Aluminum - 8" 688-03-004 Orifice - Aluminum - 3 6" 688-03-003 Orifice - Aluminum - 4" 688-03-00 Orifice - Aluminum - 3 8" 688-03-00 9 Orifice - Aluminum - " 688-03-000 Orifice - 36SS - 3 3" 688-04-005 Orifice - 36SS - 8" 688-04-004 Orifice - 36SS - 3 6" 688-04-003 Orifice - 36SS - 4" 688-04-00 Orifice - 36SS - 3 8" 688-04-00 Orifice - 36SS - " 688-04-000 Iron Body - 3 4 NPT 664-80-000 Iron Body - NPT 664-80-00 Iron Body - NPT 664-8-000 Steel Body - 3 4 NPT 664-8-000 Steel Body - NPT 664-8-00 Steel Body - NPT 664-83-000 LCC Body - 3 4 NPT 664-35-000 LCC Body - NPT LCC 664-35-00 30 LCC Body - NPT LCC 664-36-000 Stainless Body - 3 4 NPT 664-394-000 Stainless Body - NPT 664-394-00 Stainless Body - NPT 664-395-000 Steel - 3 4 NPT Socket Weld 664-356-000 Steel - NPT Socket Weld 664-358-000 Steel - NPT Socket Weld 664-359-000 Stainless - 3/4" Socket Weld 664-4-000 Stainless - " Socket Weld 664-43-000 Stainless - " Socket Weld 664-44-000 3 Nameplate (not shown) 63-474-000 3 Relief 655-709-000 33 Lower Seat 66-0-000 34 O-ring, Throat Block, Nitrile 649-8-000 O-ring, Throat Block, Fluorocarbon 649-8-00 35 Throat Block (M only) 66-08-000 36 Backup Ring, Throat Block 644-048-000 Build Screw, 3 4" & " Aluminum unit 648-466-00 37 Build Screw " Aluminum unit 648-466-003 Build Screw, all Steel Bodies 648-467-00 Build Screw, all Stainless Bodies 648-549-000 38 O-ring, Nitrile 649-000-00 O-ring, Fluorocarbon 649-000-6 40 Name Plate Drive Screw (not shown) 648-464-000 4 NACE Tag (not shown) 63-503-000 4 Diaphragm Connecting Nut 634-8-000 43 Relief Seal Retainer 643-98-000 44 Relief Seal O-ring, Nitrile 649-308-000 Relief Seal O-ring, Fluorocarbon 649-308-00 45 Diaphragm Connector 650-50-000 46 Relief Cap 64-064-000 0CW8WEB belgas.net 7